929  Leg-Stamp
닭다리 개다리 2

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There are 170 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?



There are 120 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?



우리 안에 총 150 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 520 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 190 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?

There are 220 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1670 cents. How many 8-cent stamps are there?



There are 250 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1730 cents. How many 5-cent stamps are there?



오늘 8원짜리 9원짜리 우표 총 190장을 사고, 1620 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 180 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1130 cents. How many 6-cent stamps are there?



There are 270 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1880 cents. How many 6-cent stamps are there?

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